Manual rotary mixer



FIG. 1 is a top, right side and front perspective view of a manual rotary mixer showing my new design;

FIG. 2 is a front elevation view thereof, the rear elevation being a mirror image thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a manual rotary mixer, as shown and described. 